thermodynamics Calculators
Last updated: May 2026
Ideal Gas Law Calculator
Solve for pressure, volume, temperature, or moles of an ideal gas in seconds.
Carnot Efficiency Calculator
Find the theoretical maximum efficiency of a heat engine operating between two temperatures.
Steam Quality Calculator
Calculate the dryness fraction of wet steam to determine what proportion is vapor versus liquid water.
Entropy Change Calculator
Compute the entropy change of a substance undergoing a constant-pressure heating or cooling process.
Heat Transfer Rate Calculator
Calculate the steady-state rate of heat conduction through a flat material using Fourier's Law.
Work Done by Gas Calculator
Calculates the work done by an ideal gas during isothermal expansion or compression.
Coefficient of Performance Calculator
Calculates the Coefficient of Performance (COP) for heat pumps and refrigerators.
Thermal Expansion Calculator
Calculates how much a solid material lengthens or shortens when its temperature changes.
Specific Heat Capacity Calculator
Calculates specific heat capacity from measured heat transfer, mass, and temperature change.
Adiabatic Process Calculator
Calculates the final temperature of an ideal gas after adiabatic compression or expansion.
Carnot Cycle Efficiency Calculator
Find the theoretical maximum efficiency any heat engine can achieve between a hot and cold reservoir.
Steam Properties Calculator
Estimate steam enthalpy for saturated, superheated, or liquid states at a given temperature.
Heat Exchanger Effectiveness Calculator
Calculate the maximum possible heat transfer rate for a heat exchanger given fluid flow rates, specific heats, and inlet temperatures.
Gas Turbine Brayton Cycle Calculator
Compute the net power output of a Brayton-cycle gas turbine given pressure ratio, temperatures, mass flow rate, and component efficiencies.
Refrigeration COP Calculator
Calculate the Coefficient of Performance (COP) of a refrigeration or air-conditioning system from its cooling load and compressor work.
Psychrometric Properties Calculator
Compute moist-air properties — humidity ratio, enthalpy, and dew point — from dry-bulb temperature, relative humidity, and barometric pressure.
Rankine Cycle Steam Power Calculator
Estimate net power output and thermal efficiency of a steam power plant by entering boiler pressure, superheat temperature, condenser pressure, mass flow rate, and component efficiencies.
Otto Cycle Internal Combustion Engine Calculator
Calculate the thermal efficiency and performance of a gasoline engine using Otto cycle thermodynamics.
Heat Pump COP Calculator
Calculate a heat pump's coefficient of performance (COP) from its heating capacity and power draw, with optional correction for defrost-cycle losses below 7 °C.
Diesel Cycle Efficiency Calculator
Compute the ideal thermal efficiency of a compression-ignition (diesel) engine from its compression ratio and cutoff ratio.
Otto Cycle Efficiency Calculator
Calculates the theoretical thermal efficiency of an Otto cycle engine from its compression ratio and fuel type.
Convective Heat Transfer Calculator
Calculates the rate of convective heat transfer between a solid surface and a surrounding fluid using Newton's Law of Cooling.
Steam Properties Calculator
Estimates steam enthalpy, entropy, or specific volume at specified pressure, temperature, and dryness fraction.
Rankine Cycle Efficiency Calculator
Estimates the thermal efficiency of a Rankine steam power cycle given boiler and condenser pressures, superheat temperature, and component efficiencies.
Brayton Cycle Efficiency Calculator
Calculates the thermal efficiency of a Brayton (gas turbine) cycle from pressure ratio, specific heat ratio, and component efficiency.
Combustion Air-Fuel Ratio Calculator
Determine the air-to-fuel mass ratio needed for complete combustion of methane, propane, gasoline, or diesel.
Steam Turbine Efficiency Calculator
Estimate the actual shaft power output of a steam turbine given inlet and outlet conditions and isentropic efficiency.
Gas Turbine Brayton Cycle Calculator
Analyze the thermal efficiency of a gas turbine engine using the Brayton cycle, accounting for real compressor and turbine isentropic efficiencies.
Steam Properties Calculator
Look up the enthalpy or entropy of steam in superheated, saturated, or wet states given temperature and steam state.
Diesel Cycle Calculator
Compute the theoretical thermal efficiency of a Diesel engine cycle from its compression ratio and cut-off ratio.
Psychrometric Calculator
Compute dew point, wet-bulb temperature, humidity ratio, or enthalpy from dry-bulb temperature, relative humidity, and pressure.
Rankine Cycle Power Plant Calculator
Estimate the thermal efficiency of a steam power plant modeled on the Rankine cycle, accounting for turbine and pump efficiencies and plant configuration.
Psychrometric Properties Calculator
Determine humidity ratio, enthalpy, dew point, or wet-bulb temperature from dry-bulb temperature, relative humidity, and barometric pressure.
Otto Cycle Analysis Calculator
Calculate the ideal thermal efficiency of a spark-ignition gasoline engine using the Otto cycle model.
Heat Conduction Calculator
Calculate the steady-state heat transfer rate through a flat wall, cylindrical pipe, or spherical shell using Fourier's law.
Brayton Cycle Efficiency Calculator
Computes the thermal efficiency of a gas turbine (Brayton cycle) accounting for real compressor and turbine losses.
Carnot Engine Efficiency Calculator
Calculates the maximum possible efficiency of any heat engine operating between a hot and a cold thermal reservoir.
Heat Conduction Calculator
Calculates the steady-state heat transfer rate through a flat material slab using Fourier's law.
Psychrometric Properties Calculator
Computes moist-air properties — dew point, wet-bulb temperature, enthalpy, or humidity ratio — from dry-bulb temperature and relative humidity.
Heat Exchanger LMTD Calculator
Calculates the Log Mean Temperature Difference (LMTD) for counter-flow or parallel-flow heat exchangers, then uses it to find the required heat transfer area or rate.